Identify three substances that are removed from the air as it is filtered.

Which part of cellular respiration must occur before any of the other steps can occur

This problem has been solved! see the answerfor aerobic respiration, a variety of substances must be in a state of influx across the inner membrane. assuming a brain cell in which glucose is the sole energy source, indicate for each of the following substances whether you would expect a net flux across the membrane and if so, how many molecules will move in which direction per molecule of glucose catabolized.- electrons-pyruvate-oxygen-atp-adp-acetyl coa-glyceral-3-phosphate-nadh-fadh2-oxaloacetate-water-protons

1. beginning with all chambers of the heart in the "relaxed" phase, describe the cardiac cycle in mammals, with systole and diastole of the atria and ventricles. for each time point in the cycle you select, state the following: • whether the atria and ventricles are contracting or relaxing • whether the av valves and semilunar valves are closed or open • whether the pressure in the atria and ventricles is high or low